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test.c
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tsan_go.cpp
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Editing: test.c
//===-- test.c ------------------------------------------------------------===// // // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. // See https://llvm.org/LICENSE.txt for license information. // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception // //===----------------------------------------------------------------------===// // // Sanity test for Go runtime. // //===----------------------------------------------------------------------===// #include <sys/mman.h> #include <errno.h> #include <stdio.h> #include <stdlib.h> void __tsan_init(void **thr, void **proc, void (*cb)(long, void*)); void __tsan_fini(); void __tsan_map_shadow(void *addr, unsigned long size); void __tsan_go_start(void *thr, void **chthr, void *pc); void __tsan_go_end(void *thr); void __tsan_proc_create(void **pproc); void __tsan_proc_destroy(void *proc); void __tsan_proc_wire(void *proc, void *thr); void __tsan_proc_unwire(void *proc, void *thr); void __tsan_read(void *thr, void *addr, void *pc); void __tsan_write(void *thr, void *addr, void *pc); void __tsan_func_enter(void *thr, void *pc); void __tsan_func_exit(void *thr); void __tsan_malloc(void *thr, void *pc, void *p, unsigned long sz); void __tsan_free(void *p, unsigned long sz); void __tsan_acquire(void *thr, void *addr); void __tsan_release(void *thr, void *addr); void __tsan_release_acquire(void *thr, void *addr); void __tsan_release_merge(void *thr, void *addr); void *current_proc; void symbolize_cb(long cmd, void *ctx) { switch (cmd) { case 0: if (current_proc == 0) abort(); *(void**)ctx = current_proc; } } /* * See lib/tsan/rtl/tsan_platform.h for details of what the memory layout * of Go programs looks like. To prevent running over existing mappings, * we pick an address slightly inside the Go heap region. */ void *go_heap = (void *)0xC011110000; char *buf0; void foobar() {} void barfoo() {} int main(void) { void *thr0 = 0; void *proc0 = 0; __tsan_init(&thr0, &proc0, symbolize_cb); current_proc = proc0; // Allocate something resembling a heap in Go. buf0 = mmap(go_heap, 16384, PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_FIXED | MAP_ANON, -1, 0); if (buf0 == MAP_FAILED) { fprintf(stderr, "failed to allocate Go-like heap at %p; errno %d\n", go_heap, errno); return 1; } char *buf = (char*)((unsigned long)buf0 + (64<<10) - 1 & ~((64<<10) - 1)); __tsan_map_shadow(buf, 4096); __tsan_malloc(thr0, (char*)&barfoo + 1, buf, 10); __tsan_free(buf, 10); __tsan_func_enter(thr0, (char*)&main + 1); __tsan_malloc(thr0, (char*)&barfoo + 1, buf, 10); __tsan_release(thr0, buf); __tsan_release_acquire(thr0, buf); __tsan_release_merge(thr0, buf); void *thr1 = 0; __tsan_go_start(thr0, &thr1, (char*)&barfoo + 1); void *thr2 = 0; __tsan_go_start(thr0, &thr2, (char*)&barfoo + 1); __tsan_func_exit(thr0); __tsan_func_enter(thr1, (char*)&foobar + 1); __tsan_func_enter(thr1, (char*)&foobar + 1); __tsan_write(thr1, buf, (char*)&barfoo + 1); __tsan_acquire(thr1, buf); __tsan_func_exit(thr1); __tsan_func_exit(thr1); __tsan_go_end(thr1); void *proc1 = 0; __tsan_proc_create(&proc1); current_proc = proc1; __tsan_func_enter(thr2, (char*)&foobar + 1); __tsan_read(thr2, buf, (char*)&barfoo + 1); __tsan_free(buf, 10); __tsan_func_exit(thr2); __tsan_go_end(thr2); __tsan_proc_destroy(proc1); current_proc = proc0; __tsan_fini(); return 0; }
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